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John Deere Tractors Discussion Forum

Rear Axles

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Brad Ferries

06-04-2013 20:24:20

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I just replaced thr rear axel seals [felts] on my John Deere Model B and want to know how much I should tighten the big nut on the axel. Should there be any play in the axel at all or should it be snug, It was so loose before I removed it that the cone bearings, on each side, were part way out of there race.[a good 1/4" play]. My thought was the excess play was from 66 years of ware and tare.

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Pete in MD

06-05-2013 18:35:31

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 Re: Rear Axles in reply to Brad Ferries, 06-04-2013 20:24:20  
Did you replace the oil seals and the felts or just the felts?

The shop manual says to tighten the nuts as tight as possible with a 20" long wrench and then tighten until you line up to a cotter key hole.

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Brad Ferries

06-05-2013 20:53:06

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 Re: Rear Axles in reply to Pete in MD, 06-05-2013 18:35:31  
On my model the FELTS are the seals.
Thanks for the info on the Axel Nuts.

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06-06-2013 20:35:40

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 Re: Rear Axles in reply to Brad Ferries, 06-05-2013 20:53:06  
NO, the felts are NOT the seals. Seals are inside, behind inner bearing, which is directly behind the bullgear which is what said nut tightens against. Felts are only to keep dirt from entering the outer bearing. They are porous & therefore CANNOT seal oil in.

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Pete in MD

06-06-2013 12:32:53

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 Re: Rear Axles in reply to Brad Ferries, 06-05-2013 20:53:06  
I agree with Mike M.

Every B, unstyled and styled, used an oil seal. They're located just outboard of the inner bearing cup. With the axle removed you can drive out the seal by using a hammer and a long steel rod inserted from the outer end of the axle. The bearing cup can be left in place when you knock out the seal.

The felts are there only to keep dust and grit out of the outer bearing assembly.

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Mike M

06-06-2013 10:20:05

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 Re: Rear Axles in reply to Brad Ferries, 06-05-2013 20:53:06  
You say a Model B and the felts are the seals ????

Never seen that before. They always have a lip type oil seal on the inner side of the housing and a felt at the outer end.

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Mike M

06-05-2013 04:44:18

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 Re: Rear Axles in reply to Brad Ferries, 06-04-2013 20:24:20  
I think you are to have .001-.004" end play by the book , but I tighten them until I have 0 end play but try and not to have any preload. I put the outer felts and retainers in after setting the end play otherwise it is hard to tell if they turn freely or not.

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06-04-2013 21:06:31

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 Re: Rear Axles in reply to Brad Ferries, 06-04-2013 20:24:20  
I snugged mine up till they were tight and I was in line with the hole for the cotter key..

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